Sectional heater



June 2, 1931. wAp 1,808,391

SECTIONAL HEATER Filed Aug. 6, 1930 2 Sheets-Sheet l 'Ihwentor VVaZoZcZeZZ I Gttorncg June 2, 1931. J, A, WADDELL- SECTIONAL HEATER Filed Aug. 6, 1930 2 Sheets-Sheet 2 00/ unburned and/464 Cittomeg Patented June 2, 1931 1 .frosnr'r: A. wrinnnim; or winnreirsronr, PENNSYLVANIA: AssIGNon To srnnonn nearnacomreny, or wrLLr Msron'r, PENNSYLVANIA, a 'oonronarron'or PENN- sYLvAnre Samoan H ATER Application filed-August G, 1930. enial No. 473,431. I

This invention relates to sectional boilers and has for its object to providea construction which is simple in pa'rts,-and more efficient in use than'those heretofore proposed. \Vith these and other objects in view the invention resides in the novel details of construction and combinations of parts as will be disclosedmore fully hereinafter and particularly pointed'out in the claims.

Referring to the accompanying drawings forminga part of this specification and in which like numerals designate like parts in all the views,

Fig. 1 is'a perspective view of a boiler made in accordance with this invention, the front section having been removed to more fully illustrate the interior construction and, arrangement of parts;

' Fig. 2 is a partial sectional view of the bottom or throat portion 'of the fuel magazine; 1

Fig. S is a central longitudinal vertical. sectional vi-ewof the complete boiler; and Fig. i is a partial diagrammatic view illus-- n n trating the use of theboiler with only one grate in operation.* g

Sectional boilers have been produced heretofore', and of the fuel magazine type, wherein, the magazine has been disposed centrally of the boiler so that the fuel will feed by gravity onto a double grate,'and-boilers employing a single grate have been devised with a magazine located on one side'of the boiler so that thefuel will feed by gravity in a downward and inclined direction over said gratei p The'boil'er of thisjinvention is designed to combine both of these features namely, the provision of aidouble grate as well as duplicate fuel magazines which latter are disposed on opposite sides of the boiler.

- Referringto the drawings, and particularlyfFig. 3 thereof, there is shown a front section generally indicated the-numeral 1, a rear section indicated by the numeral 2, and a plurality of identical intermediate sections indicated at 3, each section being provided with ribs 4, which are ground to provide'close contacting edges between the ad acent sec-' tions, as well as nipples generally indicated at 5 closely interfitting to providepassages between the sections for water or steam. There are'preferablylprovided three nipples on each section, one located centrally at the top thereof, and one disposed approximately at the upperextremityi of the grate ineach waterLleg at the sides of the boiler sections.

' Each intermediate section'is provided with a hollowed portion on one side constituting a water leg'6 which is in open communication at its bottom with the water passage 7 about which isdisposed one of the nipples 5', said water leg at its top being in'open communication'with a hollowed portion constituting a cross chamber 8 leading to theother side of the'section where it is in open communication'with the top of a water leg 9 similar in every respect to the water leg 6,'the' water 1eg 9 at its bottom being in open communication with the, water passage 10 having-thereabout anotheriof thenipples 5 for joining the sections together. Eachlsection below; the water passages 7 and 10 is provided with a leg portion 11 by meansof which the section is supported on the floor. t r The cross chamber 8 at thetop of the boiler section communicates with a plurality of vertical spaced downwardly extending water passagesYlQ which terminate-in .a slightly arched water conduit l3'whichfinturn commnnicates with a plurality of vertical spaced downwardly. extending-water passages 1 f leading to a lower slightly arched water conduit 15 the: outer ends ofwhich are downwardly extended as 'indicatedqat' 16 and di-' rected obliquelytoward'the side wiater legs hereinbefore mentioned. On each side of each section is a water conduit 17 extending v I tially of a width equal to the thickness of the of the section, butthe passages 12,,1 l, 1 6'and 17 are slightly less in thickness than the said section, whereby there are created air spaces in and around each of the lat-ten. All-- of the water passagesland conduits are somewhat val or rounded so that the gases of combuse tion, as Well as the-fuel may pass around the outer surfaces thereof.

The rib i hereinbefore mentioned extends from a lower nipple 5 upwardly, across the top, and downwardly on the otherside of the section to the othernipple in substantially the outer plane of the boiler section, and'a rib 20 extends from each-lower nipple?)- upwardly along. the inner edge, surface of the water, leg to join the.aforementioned rih Alat.

a point well above the bottom of the fuel magazine as indicated at 21. v

The water passages 12 are formed as a central group to provide. on either sideEthere, of afuel magazine indicated at 22, said magazine beingformed by-the cross-chamber 8 at. the top, the water conduit 17 at:' the bottom, the water leg such as. 6 on the outer side ofsthe boiler section, and: on the-inner sidelby the downwardly extending wateri passage such as 23 whichflis the outermost of the-passages. 12. The water passage-23 is continued'downa wardly and inclined towardlthe sid eio-f the boiler section to constitutewthe outer. of the passages 1e; and terminatesiin the: down-:

j wardly extending end lfiofthe water conduit;

15, all as will be clearly understood from the drawings, As rib2 1 extends from the rib' l downwardly along the I outer portion of: the passage23gbutterminates atthebottom ofrthe portion-16. A: similar rib 25 is symmetrically disposed on the other side of the boiler; section, and-between the=ribs 24' and25 along each "ofthe conduits 13 and 115 are provided ribs 26j=and27 respectively; Lastly alrib 28 is disposed on theIw-ater leg -9 a which rib a is symmetrical :in every respectzwitlrthe. above. clescri-bed:rib-20, V V p It this resultsthatawhen the sectionsare correctly secured togetherfbyetie;rods, not shown but readily understood, all ofthe aforementioned ribs will} contactingly abuti with similar ground 1 ribs on =t-he adjacent; sections as a-result of which th'e boiler as apwholezwill be made-tight. Further, the-ribs 4; 20.: and 24' will close oif one .fuel' chamber from. the

. rest of theboiler excepti at the. magazine throat immediately above the grate, 'and in'. like manner-the-ribs 4t, 25 andi28xwilfclose.

off a similar fuel chamber on the other. side of'the boiler which is onlyv open-atfthe magazine throat: immediately above the other grate. A lsothe ribs 4, 24, 25 and 2.6 willform a flue chamber at. the .top of the. boiler completely closed off? from. the Qfuela mega-s Zine chambers, .andthe ribs.24,. 25, 26;:and' 27 will form asecond closedflue chamber immediately below the first mentioned. flue chamber, it being understood that the water registrywith each} fuel magazine, chamber 22, each of which openings is closed by a door. Between the two magazine openings is another opening 31 closed by the door 32 which opening provides means for cleaning the flue chamber passages around'the water tubes 12 and 14:; Immediately, belowthe "opening 31 is another opening 33, closed=by the door 34,

whichcommunicates with the fire pot or combustion, chamber generally. indicated. by. the

er front section are other openings eachclosed was a,door 36 which give access to the ash pits such as 37 and38. The water jacket of the, front. section extends thereacross and around the aforementioned openings, with the exception of they ash 1 pit.- openin s,:, and

said water-j ackxetcommunicateswith t .e-next. 7

municating respectively With the- -lower,'flue chamber associatedawithathe; passages 141; and the fire pot 35. The watenja'eketAO.likewise terminates at its: bottom in; substantially the lower planejof thegrates.v l

Both the front and rear sections have-their, outeiu faces. extended -.do'wn.wardly.t r the lower. front andfzrearrwalls 44 and Ar5gl'QSIJQG? tively ofithe ash pit, and iclo elyfit i gther between:v istana I beam or; othen 1 similarr -st ruc tural member46 dividingjtlieaash pit into two i halves. saidi beam forming; the; central supportqforgthe. grates. 'I his Ifbeamiissuit; ablyv securedzat its ends 2 47 to suitable.- flanges; on-;the aforementioned walls 4a and 15,-. .On-rhe upper: flange of thee m-i secured a. plurality, of gsimilarlygformed; sad; dles 48-each ofiaiwidthpequal :tothe thickness of an intermediate section. Eaeh isaddlehas a: sloping upper-surfa cefoffaformationgvery similar to a ship roof of a house or building: That: is to isa. thereis a; central, ridge. from which he upper surfac u h, s 49.;- l p slightly -.dewnwardly; to. points substantially above theaedges lot the upper; flange ofrthe; I beam, and then; said,- surface; on. eachside slopessmoreysharply, deWnwarcl-ly as indicated at: 5,0 terminating just; below the: horizontal plane of; said? flange; This. last. mentioned slope ,5 0 is parallel to ,the.v surface 5L formed on the inner; side; of the water; leg uSt; below.

- thQ1lOWBI water passage 119; Tllhesur faee -50 of: each-saddlezlias secured theretq. a; lug. 52.,- and. the, surface: 51-,hes. formed? in the: upper pert-i011thereQfsmgPQO Q-535 aidililg enda fiii l grooveadapted to receive opposite ends of the rod for the grate'section 54.

It will thus be understood from the foregoing that there is a saddle for each intermediate section and that there is a grate such as54between said saddle and said section, the side edges of the grate being serrated or toothed to intermesh with the edges of the next adjacent grate. Also, the inner surface of the front and rear sections is provided with a sloped extension indicated at 55 which has a serrated edge for intermeshing engagement with the adjacent grate sections.

. whereby fuel from the magazine 22 will pass,

under the urge of gravity, downwardly through the spaces'56 (see Figure 2) between the water conduits 17 and drop onto the high est portion of the grate from which said fuel will slide over the downwardly inclined grate surface toward the saddles 48 located at. the longitudinal center of the boiler (see Figure 1). Each grate section 5 is preferably made in two parts with a shaker bar such as 5'7 connected to each and extending forwardly through the front section 1 to abell crank such as 58 to which may be applied a suitable shaking lever. The other side of the heater is provided with a grate section such as which is a duplicate of the grate section 54:

and mounted in a similar manner so that fuel from the other magazine may pass in a Sim-- ilar manner to meet, at the longitudinal center of the heater, the fuel from the first mentioned magazine.

With particular reference to Fig. 3 it will be seen that the gases of combustion will pass from the fire pct 35 in the direction of the arrows, towa-rd the rear section 2 thence up-' wa-rdly around'the rearmost water conduit 15, thence forwardly through the lower flue chamber between the water .conduits 13 and 15 to the front section 1, thence upwardly around the front conduit 3 into the upper flue chamber and thence in a. rearward direction between the top cross'chambers and the conduits 13 to and through the flue opening 41, the several ribs 26 and 27 preventing any vertical flow of said gases between the conduits 13 and 15. It will further be understood that the water in the conduits 15 and their downwardly extending portions 16 will receive the highest temperature ofthe gases of combustion so that circulation of the water is effected from the lower portions of the water legs through the passages 17 to the passages 23, and from the conduits 15 upwardly through the. passages 14 through the conduits 13 and passages 12 to the cross chambers 8 at the top of the heater, the return circuit of the water being in directions from the It should further be understood that each saddle longitudinal center of the boiler laterally'in said cross chambers S to the sides of the boiler and thence downwardly through the passages 6 and 9 to the lower portion of the water legs. A suitable wate'r'inlet 61 isprovided at a low elevation in the-rear section 2, and a water outlet 62 is-provided atthe top portion which maximum heating effect of the boiler is obtained. This boiler is especially de-- signed for larger buildings and, to operate both grates thereof 'duringthe spring and fall months, when less heat is required, would cause an unnecessary and wasteful consump-' tion of fuel. Therefore the magazines for 1 the fuel have been placed on the outer sides of the boiler, and there have been provided two grates supported by an imperferatepartition consisting of the I beam 46 which latter forms two separate ash pits. As a consequence, the boiler automatically is divided into two halves, either of which can be independently operated. That isto say,

either one ofthe fuel magazines22 can be charged whereupon the fuel w1ll flow to the grate associated therewithand lie thereover as indicated 'diagrannnatically in Figure 4.

The drafts in connection with said grate wouldbe operated as necessary but theother side or half of the boiler would remaininoperative, with its drafts closed, and its magazineand associated grate empty. The result would be that heat from one half of the total grate area would be generated whichwould,

in turn heat the water of the entire boiler and generate sufficient steam for heating the building in the spring. and fall months. VVhenthe weather became colder the other magazine 22 couldbe filled with fuel and the other side of the heaterfired to augment the heating effect, thereby establishing thefull operation of the heater.

It is obvious that those skilled in the art may vary the details of construction and arrangements of parts without departing-from thespirit of theinvention, and therefore it is not desired to be limited to the foregoing except as may be required by the claims.

What is claimed is l 1 1. Ina water heater the'combination of'a' plurality of sections placed side by side and so shaped as to form a water-jacketed fuel acombustion'chamber below-and between said'magazines; a grate" below eaclrmagazine and meeting a water leg at one end and so shaped asto form a ater-jacketeidfuel.

means-for; supporting the other end; or the grates.

2 In ai-water heater the combination of a plurality, of; sections placed, side by: sidejand, soishaped as toform aWater-jacketed fuel ber below each magazi-neandcommunicate ingW-ithsaid flues, the hottomsofsaid magazinesiformed by spaced watericonduitscom-,

municatingwith. said Water legs as Well? as with. the Water: passag 1 intercepting sa d flues ;;and a grate below-l each, magaz neand combustion chamber. v

In aW-ater heater; the combination ofaplurality of; sections-placed side by; side and magazine: on opposite-sides of the heater, the W lter-j acket on one side of each magazine ex.- tended downwardly to form va Waterleg fines between said magazines, and a, combustion chamberv below-(and betweensaid magazines, 7

the bottomsof; said. magazines formed by, spaced Water conduits communicating with said Water legs asiWell asJW-ith, Water passages extending across said fines; a grate be-' low; each magazine ;;andmeans for, supporting th g a -i v c.

4., In awater heater the combination 1 of. a pluralityof sections placed. side by side and i so ,shaped as to i form, a, Water-jacheted fuel magazine on ;,opposite sides of the heater and a\ combustion; chamber; below andv between said magazines, the WfitBIrjfiGkQh on,one side of: each magazine extended downwardly to form aiwaterv, leg 3a grate beloweach-naaga; zine andxsupp orted at one; end -,in said ater. leg; and. comment means; for supporting -the other endoof the grates, i 7

5:. A water heater; comprisingfront; backand intermediate sections, ith double grates; independent ash pits, single combustion chain her, and Water-j acketcd :t'ue-l magazines sepa: ratedzby connectedifiues; the waterej acket on one side of each: magazine extended; downwardly to. form; a Water leg; supportingone end of: each grate.

6;; In: heaterconstruction, of sectional magazine, feed typewith double inclined grates the combination 5 of Waten leg dis: posed on seach=side of a; section, said legs ex" tending to the top rotsaid sect-iomand each provided: with; an inclined, inner surface; a

chamber in; open: communicationwith said water legs-and extending across the top of said section; extensions of said chamber, dependingtherebelow each-inclined towards the inclined surface of.a,water,leg to formtherewith a. constricted ;thro at; through which the fuel; passes: from! a magazine; therefor; a

water, conduit; in open communication with V i tees-n2 and, connecting each d'epending extension with a Water legsaid conduit extendingto a point near the grate and outlets from said WaterE legs and fro1n. s a1d chamben to an adacent; SBCtlOlL.

In a. heater construction of sectional magazine feed type with double incl ned grates the comb1nat1on,of a, Water-leg disposed on each side of a section said legsiexr 1 tending to the top ofsaid sectionand each provided With. an inclined inner surlace; a chamber in open communication with said Water legs and1extending across the top of said section; extensions of said chamber depending therebelow each inclined towards the inclined surface of a Water leg;,fuel' magazines at the top of said section onsopposite sides thereof, each magazine formed by awater. leg; said chamber, and anextension thereof; the inclined extensionrandthe,

inclined surface of'the water leg forming a constricted. throat through. which the. fuel passes from the associated magazine {aw'ater from saidwater. legs and from said .chamber to an adjacent: section.

8.111 a. heater construction of sectional magazine feed type, with doublev inclined grates the combination of a Water leg disposed on each sideof a section, said legs ex;

tending to the top of. said; section and g'each provided W1th an inclined inner surface; a grate'csupport formedon, said surface a chamber in open communlcatlon with sa1d Water legs. and extending across the top of said section; extensions ,ol'said chamber depending .therebelowj each inclined towards the inclinedsurface of a waterle to form' therewith a constricted throat through which the .fuelpa-sses from amagazine therefor; a

Water conduit in; open communication with" and; connectingeach depending extension with a Water legsaid conduit extending-to a point nearthe grate fm'e'ans disposed at the bottonrof said section between said'water legs forminga second grate support; and outlets from said Water legs and from said chamber toian adjacent sectioln Intestimony whereof Iaflix my signature.

' JOSEPH A. XVADDELL. 

